The detection efficiency for electrons is essentially 100% for most scintillators.
In addition to lowering the detection efficiency, dead times can have other effects, such as creating possible exploits in quantum cryptography.
The experiment had detection efficiencies well over 90%.
Alternative approaches to performing interaction-free measurements have been devised with much higher bomb detection efficiencies.
Because the emitted electrons have relatively low energy, the detection efficiency by scintillation counting is rather low.
There often is a family of curves, parameterized on the detection efficiency (or labeled as to specific nuclides).
Such techniques can decrease the transmission and reflection from the detectors to negligibly low values; 95% detection efficiency has been observed.
The "detection efficiency", or "fair sampling" problem is the most prevalent loophole, and affects all experiments performed to date except one.
In Bell test experiments one problem is that detection efficiency may be less than 100%, and this is always the case in optical experiments.
However, the effect is negligible if the detection efficiencies are low.